On Apr 7, 1:55*pm, RobertH wrote:

*The only potential advantage over in-line two wheelers is that,
supposedly, it won't fall over. ...

Ever try one? Bicycles and crowds of people don't mix well at all
because of the difficulty of starting and stopping and the need to
maintain some speed to balance. Segways stop and stand still easily,
like pedestrians. Could you push a grocery store shopping cart with a
standard bicycle? You can easily on a Segway, or spin around in place
to pull it.